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Finding the Fourth Proportional to 157,617.10, 217,510.86 and 85,996.90

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Solution

The fourth proportional to 157,617.10, 217,510.86 and 85,996.90 is: 118,675.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,617.10 : 217,510.86 = 85,996.90 : x
  2. Step 2: Convert to fraction form
    157,617.10/217,510.86 = 85,996.90/x
  3. Step 3: Cross multiply
    157,617.10x = 217,510.86 × 85,996.90
  4. Step 4: Simplify right side
    157,617.10x = 18,705,259,676.33
  5. Step 5: Solve for x
    x = 18,705,259,676.33/157,617.10
  6. Step 6: Final answer
    x = 118,675.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.